Here's the breakdown:

* Molecule: A molecule is a group of two or more atoms held together by chemical bonds. Think of water (H₂O), which is a molecule made up of two hydrogen atoms and one oxygen atom.

* Mole: A mole is a unit of measurement used in chemistry to express the amount of a substance. It's like a "dozen" for molecules. One mole of a substance contains 6.022 x 10²³ (Avogadro's number) of that substance's particles (atoms, molecules, ions, etc.).

Think of it this way:

* You can have a molecule of water (H₂O).

* You can have a mole of water, which contains 6.022 x 10²³ water molecules.

In summary:

* Molecule: A specific group of atoms bonded together.

* Mole: A unit of measurement for the amount of a substance.